refactor(examples): switch examples from cra to nextjs

2022-07-19 17:23:26 +02:00
parent 62c417263c
commit be4dd6f1fa
86 changed files with 755 additions and 45859 deletions
@@ -0,0 +1,160 @@
+import React, { useCallback, MouseEvent, useEffect } from 'react';
+
+import ReactFlow, {
+  Node,
+  addEdge,
+  Background,
+  MiniMap,
+  useReactFlow,
+  ReactFlowProvider,
+  Connection,
+  Edge,
+  useNodesState,
+  useEdgesState,
+} from '@react-flow/core';
+
+const initialNodes: Node[] = [
+  {
+    id: '1',
+    type: 'input',
+    data: { label: 'Node 1' },
+    position: { x: 250, y: 5 },
+    className: 'light',
+  },
+  {
+    id: '2',
+    data: { label: 'Node 2' },
+    position: { x: 100, y: 100 },
+    className: 'light',
+  },
+  {
+    id: '3',
+    data: { label: 'Node 3' },
+    position: { x: 400, y: 100 },
+    className: 'light',
+  },
+  {
+    id: '4',
+    data: { label: 'Node 4' },
+    position: { x: 400, y: 200 },
+    className: 'light',
+  },
+];
+
+const initialEdges: Edge[] = [
+  { id: 'e1-2', source: '1', target: '2', animated: true },
+  { id: 'e1-3', source: '1', target: '3' },
+];
+
+let id = 5;
+
+const getId = () => `${id++}`;
+
+const UseZoomPanHelperFlow = () => {
+  const [nodes, setNodes, onNodesChange] = useNodesState(initialNodes);
+  const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdges);
+  const onConnect = (params: Connection | Edge) =>
+    setEdges((eds) => addEdge(params, eds));
+  const {
+    project,
+    setCenter,
+    zoomIn,
+    zoomOut,
+    fitView,
+    addNodes,
+    setNodes: setNodesHook,
+    addEdges,
+    getNodes,
+    getEdges,
+  } = useReactFlow();
+
+  const onPaneClick = useCallback(
+    (evt: MouseEvent) => {
+      const projectedPosition = project({
+        x: evt.clientX,
+        y: evt.clientY - 40,
+      });
+
+      setNodes((nds) =>
+        nds.concat({
+          id: getId(),
+          position: projectedPosition,
+          data: {
+            label: `${projectedPosition.x}-${projectedPosition.y}`,
+          },
+        })
+      );
+    },
+    [project, setNodes]
+  );
+
+  const onNodeClick = useCallback(
+    (_: MouseEvent, node: Node) => {
+      const { x, y } = node.position;
+      setCenter(x, y, { zoom: 1, duration: 1200 });
+    },
+    [setCenter]
+  );
+
+  const onAddNode = useCallback(() => {
+    const newNode = {
+      id: getId(),
+      position: { x: Math.random() * 500, y: Math.random() * 500 },
+      data: {
+        label: 'New Node',
+      },
+    };
+
+    addNodes(newNode);
+  }, [addNodes]);
+
+  const logNodes = useCallback(() => {
+    console.log('nodes', getNodes());
+    console.log('edges', getEdges());
+  }, [getNodes]);
+
+  useEffect(() => {
+    addEdges({ id: 'e3-4', source: '3', target: '4' });
+  }, [addEdges]);
+
+  const onResetNodes = useCallback(
+    () => setNodesHook(initialNodes),
+    [setNodesHook]
+  );
+
+  return (
+    <ReactFlow
+      nodes={nodes}
+      edges={edges}
+      onNodesChange={onNodesChange}
+      onEdgesChange={onEdgesChange}
+      onNodeClick={onNodeClick}
+      onConnect={onConnect}
+      onPaneClick={onPaneClick}
+      fitView
+      fitViewOptions={{ duration: 1200, padding: 0.2 }}
+      maxZoom={Infinity}
+    >
+      <div style={{ position: 'absolute', left: 0, top: 0, zIndex: 100 }}>
+        <button onClick={() => zoomIn({ duration: 1200 })}>zoomIn</button>
+        <button onClick={() => zoomOut({ duration: 0 })}>zoomOut</button>
+        <button onClick={() => fitView({ duration: 1200, padding: 0.3 })}>
+          fitView
+        </button>
+        <button onClick={onAddNode}>add node</button>
+        <button onClick={onResetNodes}>reset nodes</button>
+        <button onClick={logNodes}>useNodes</button>
+      </div>
+      <Background />
+      <MiniMap />
+    </ReactFlow>
+  );
+};
+
+const WrappedFlow = () => (
+  <ReactFlowProvider>
+    <UseZoomPanHelperFlow />
+  </ReactFlowProvider>
+);
+
+export default WrappedFlow;